Results 1 to 10 of about 5,585,699 (313)

Lethal dose 50 and the first-generation mutant of upland purple rice cultivar Med Fai 62 [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2023
Inducing mutations is a breeding tool that creates genetic variability. In this study of inducing mutations in the Indica upland purple rice cultivar Med Fai 62 with mutagenic Ethyl Methane Sulfonate (EMS), a completely randomized experimental design ...
Nucharee Chadakan   +2 more
doaj   +3 more sources

Determination of the lethal dose 50% (LD50) of cadmium chloride and the histopathological changes in male mice liver and kidneys [PDF]

open access: yesJournal of Education and Science, 2012
The lethal dose 50 (LD50) test involves the administration of cadmium in the form of CdCl2 to group of animals at an increasing dose in order to determine the dose that kills 50 percent of the test mice within a set of time frame (24 and 48h).
T. Ali
semanticscholar   +3 more sources

Determination of lethal dose and effect of physical mutagen on germination percentage and seedling parameters in kodomillet variety CO 3

open access: yesElectronic Journal of Plant Breeding, 2016
An experiment was conducted to estimate the lethal dose of the physical mutagen gamma ray in Kodomillet variety CO 3. Genetically pure seeds were treated with different doses of gamma rays viz., 100 Gy, 200 Gy, 300 Gy, 400 Gy and 500 Gy.
J Poornima Jency   +3 more
doaj   +2 more sources

Lassa antiviral LHF-535 protects guinea pigs from lethal challenge

open access: yesScientific Reports, 2022
LHF-535 is a small molecule antiviral currently in development for the treatment of Lassa fever, a zoonotic disease endemic in West Africa that generates significant morbidity and mortality.
Kathleen A. Cashman   +8 more
doaj   +2 more sources

Alternative methods for the median lethal dose (LD(50)) test: the up-and-down procedure for acute oral toxicity. [PDF]

open access: yesILAR Journal, 2002
The authors have developed an improved version of the up-and-down procedure (UDP) as one of the replacements for the traditional acute oral toxicity test formerly used by the Organisation for Economic Co-operation and Development member nations to characterize industrial chemicals, pesticides, and their mixtures. This method improves the performance of
A. Rispin   +8 more
semanticscholar   +3 more sources

Lethal dose 50 of NaCl and ethyl methanesulfonate in jalapeño pepper (Capsicum annuum L.) seedlings and tolerance to salinity [PDF]

open access: yesCiência e Agrotecnologia, 2023
Soil salinity is a factor affecting crop production and yield. An estimated 74% of agricultural soils are saline, a problem that could be aggravated due to climate change.
Andrés Adrián Urías-Salazar   +5 more
doaj   +2 more sources

TOKSISITAS AKUT DAN LETHAL DOSIS (LD50) EKSTRAK ETANOL UWI BANGGAI UNGU (Dioscorea alata L.) PADA TIKUS PUTIH (Rattus norvegicus)

open access: yesJurnal Ilmiah Medicamento, 2020
Penelitian ini merupakan penelitian eksperimental murni dengan tujuan untuk mengetahui gejala toksisitas akut dan lethal dose 50 ekstrak etanol uwi Banggai ungu (Dioscorea alata L.) terhadap tikus putih (Rattus norvegicus). Penelitian ini menggunakan 20
Corry Stephanie Sulastra   +2 more
doaj   +5 more sources

In Ovo evaluation of antiviral effects of aqueous garlic (Allium sativum) extract against a velogenic strain of Newcastle disease virus [PDF]

open access: yesJournal of HerbMed Pharmacology, 2020
Introduction: The antiviral property of aqueous garlic extract against a virulent velogenic field isolate of Newcastle disease virus (NDV) was investigated in a time of addition assay in embryonated chicken eggs (ECEs).
Fatemeh Doostmohammadian   +3 more
doaj   +1 more source

Safety assessment of the Polypodium feei root extract: Acute and subchronic studies

open access: yesToxicology Reports, 2021
This study was performed to assess the safety of the oral acute and subchronic administration of Polypodium feei root extract through acute and subchronic studies in mice and rats, respectively.
Deden Winda Suwandi   +3 more
doaj   +1 more source

Antioxidant Activity and Lethal 50 Doses of Polyhydroxybutyrate Nanoparticles (PHB-NPs)

open access: yesWorld Journal of Experimental Biosciences, 2022
Preparing Polyhydroxybutyrate nanoparticles (PHB-NPs) in a safe, economical, and effective manner is one of the biggest challenges facing nanotechnology workers. The current study aims to find an effective and safe way to prepare PHB-NPs. Moreover, to find the antioxidant effect and lethal dose fifty (LD50) of prepared PHB-NPs.
null Jenan A. Ghafil   +1 more
openaire   +1 more source

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